The assembly kit includes a side folder mechanism, L-Bracket, a stock adaptor with 1 3/16 thread (accepts any AR-15 buffer tube), fasteners and the MPA low profile stock.

This complete system will allow an individual to attach the MPA Side Folding Stock to an MPA Carbine.

The stock will fold toward the shooters left side, away from the ejection port.

The side folder locks in both the “open” and “closed” position.

MasterPiece Arms Side Folder Assembly Kit with Stock

Please specify 9mm / 5.7 caliber or 45ACP when placing the order. The 9mm / 5.7 version will fit any 9mm or 5.7x28mm MPA Carbine (MPA930sst, 20sst, 5700sst). The 45ACP version will fit any 1sst Carbine (1sst).

Please note, if this item is added to any MPA Pistol, it will convert the weapon into an SBR, which is an NFA weapon. A tax stamp will be required to add this item to an MPA Pistol. NFA rules and law apply. Check with your local Class II dealer for details. MSRP is $129.99.